Browse & filter

Filter by platform, license text, maturity, maintenance cadence, and editorial tags like privacy-focused or self-hosted. Search matches names, summaries, tags, and use cases.

Delta Chat

Honorable mention

Messenger using email as transport—chat over your existing IMAP/SMTP accounts.

chatemailprivacydecentralized

Communication & Collaboration

SimpleX Chat

Also strong

Decentralized messaging with privacy-first routing.

messagingprivacydecentralized